iff_ioctl_func

Declaration

typedef errno_t (*iff_ioctl_func)(void *cookie, ifnet_t interface, protocol_family_t protocol, unsigned long ioctl_cmd, void *ioctl_arg);

Parameters

• cookie:

  The cookie specified when this filter was attached.

• interface:

  The interface the packet is being transmitted on.

• ioctl_cmd:

  The ioctl command.

• ioctl_arg:

  A pointer to the ioctl argument.

Return Value

Return: 0 - This filter function handled the ioctl. EOPNOTSUPP - This filter function does not understand/did not handle this ioctl. EJUSTRETURN - This filter function handled the ioctl, processing should stop. Anything Else - Processing will stop, the error will be returned.

Discussion

iff_ioctl_func is used to filter ioctls sent to an interface. The interface is only valid for the duration of the filter call. If you need to keep a reference to the interface, be sure to call ifnet_reference and ifnet_release.

All undefined ioctls are reserved for future use by Apple. If you need to communicate with your kext using an ioctl, please use SIOCSIFKPI and SIOCGIFKPI.